<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr />
    <textarea
      v-model="msg"
      placeholder="请输入要BB的内容（做多吐槽120字）"
      maxlength="120"
    ></textarea>

    <mt-button type="primary" size="large" @click="postComments"
      >发表评论</mt-button
    >

    <div class="cmt-list">
      <div
        class="cmt-item"
        v-for="(item, index) in comments"
        :key="item.add_time"
      >
        <div class="cmt-title">
          第{{ index + 1 }}楼&nbsp;&nbsp;用户：{{
            item.user_name
          }}&nbsp;&nbsp;发表时间：{{ item.add_time | dateFormat }}
        </div>
        <div class="cmt-body">
          {{
            item.content === "undefined" ? "此用户很懒，嘛都没说" : item.content
          }}
        </div>
      </div>
    </div>
    <mt-button type="danger" size="large" plain @click="getMore"
      >加载更多</mt-button
    >
  </div>
</template>

<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      pageIndex: 1,
      comments: [],
      msg: ""
    };
  },
  created() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageindex=" + this.pageIndex)
        .then(result => {
          if (result.body.status === 0) {
            this.comments = this.comments.concat(result.body.message);
          } else {
            Toast("获取数据失败。。。。");
          }
        });
    },
    getMore() {
      this.pageIndex++;
      this.getComments();
    },
    postComments() {
      if (this.msg.trim().length === 0) {
        Toast("评论内容不能为空。。。。");
        return false;
      }

      this.$http
        .post("api/postcomment/" + this.$route.params.id, {
          comment: this.msg.trim()
        })
        .then(result => {
          if (result.body.status === 0) {
            var cmt = {
              user_name: "匿名用户",
              add_time: Date.now(),
              content: this.msg.trim()
            };

            this.comments.unshift(cmt);
            this.msg = "";
          } else {
            Toast("获取数据失败。。。。。");
          }
        });
    }
  },
  props: ["id"]
};
</script>

<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }

  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
      .cmt-title {
        line-height: 30px;
        background-color: #ccc;
      }
      .cmt-body {
        line-height: 35px;
        text-indent: 2em;
      }
    }
  }
}
</style>

